My first real bass amp was a Sears Silvertone 150, also known as the 1466. This was 1967. I traded the 1466 for a Fender Dual Showman head in 1970. Before I traded it away, I gigged with it for a couple of years driving a Fender Dual Showman cab with 2x15 JBL D140's. This was the late 1960's. I always thought it was a surprisingly loud head, which certainly sounded much better driving the Dual Showman cab than the poorly executed 6x10 cab it came with. For years I've wondered about those 1466 heads, and wondered how much power they could actually put out. The Sears service literature says the head will produce 100 watts into a 5.3 ohm load (which is what the 6x10 cab presented), but I wondered if it was true or not. A few weeks ago I found a 1466 head that was in working condition used. The electrical condition was as one would expect from a budget amp that's 50+ years old. It needed fresh caps through the preamp, & resistors that weren't so noisy in the first stage. I also replaced the first stage transistor which was also somewhat noisy. Thankfully, the main filter caps were in very good condition. So, does the 1466 head really make 100 watts RMS or not?... Well, on my bench it DOES in fact make 100 watt RMS into a 4 ohm load (I don't have a 5.3 ohm load). At this point, it's generating about 5% distortion, and into light clipping. The clipped waveform isn't nasty though, the edges are gently rounded. Below 100 watts, the distortion is overwhelmingly 2nd order...so it blends in well with the music. About 2.5% distortion at half power. The frequency response of the 1466 head is actually quite flat with both tone controls set to max...+/-0.5db from 40Hz to about 10kHz. It's down 3db at 10Hz and 15kHz. Noise with the modern input transistor, fresh preamp caps, and new carbon film resistors is about -53db below 1 watt...quite acceptably quiet for a bass amp. I added a 1/4 inch output (speaker) jack, and a grounded power cord. Since the power amp was working so nicely, I also added a 1/4 inch line-level input jack on the rear, which breaks the feed from the preamp board. Negative feedback is applied to the driver stage, and I went in at the stage prior to that. I've attached a few picks of the amp driving my Mesa 115 and 112 combination. I honestly like the sound of the 1466 head...it's bright and punchy. And yes, it's as loud as I remember it. Not nearly as loud as my Mesa D800, but plenty for rehearsals, and small to medium sized gigs. I wonder how many in the TalkBass community started with one of these? Dave O.